Mass per volume density.
Drams per Cubic Meter to Long tons per Cubic foot Converter — dr/m3 to long ton/ft3
Convert Dram per Cubic Meter (dr/m3) to Long ton per Cubic foot (long ton/ft3) using the exact conversion factor (1 dram per cubic meter = 4.938066e-8 long ton per cubic foot). See the formula, worked examples, and conversion table.
Drams per Cubic Meter to Long tons per Cubic foot converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 0.001771845195 / 35881.35796.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Cubic Meter to Long tons per Cubic foot
Dram per Cubic Meter and Long ton per Cubic foot both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
long tons per cubic foot = drams per cubic meter × 4.938066e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per cubic meter equals 0.00177184519531 base units, and 1 long ton per cubic foot equals 35881.3579577 base units, so dividing one by the other gives the direct dram per cubic meter-to-long ton per cubic foot factor of 4.938066e-8.
Simple example
1 dr/m3 × 4.938066e-8 = 4.938066e-8 long ton/ft3
1 dram per cubic meter = 4.938066e-8 long tons per cubic foot.
Real-world example
1,000 dr/m3 × 4.938066e-8 = 0.0000493807 long ton/ft3
1,000 drams per cubic meter = 0.0000493807 long tons per cubic foot.
Conversion table
| Dram per Cubic Meter (dr/m3) | Long ton per Cubic foot (long ton/ft3) |
|---|---|
| 0.1 dr/m3 | 4.938066e-9 long ton/ft3 |
| 1 dr/m3 | 4.938066e-8 long ton/ft3 |
| 10 dr/m3 | 4.938066e-7 long ton/ft3 |
| 100 dr/m3 | 0.0000049381 long ton/ft3 |
| 1,000 dr/m3 | 0.0000493807 long ton/ft3 |
| 10,000 dr/m3 | 0.0004938066 long ton/ft3 |
Reverse conversion: Long ton per Cubic foot to Dram per Cubic Meter
4.938066e-8 long ton/ft3 × 20250842.48 = 0.9999999675 dr/m3
4.938066e-8 long tons per cubic foot = 0.9999999675 drams per cubic meter.
drams per cubic meter = long tons per cubic foot × 20250842.4848
For a page dedicated to this direction, see Long ton per Cubic foot to Dram per Cubic Meter.
Understanding the Dram per Cubic Meter (dr/m3)
Mass per volume density.
Understanding the Long ton per Cubic foot (long ton/ft3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per cubic foot are in 1 dram per cubic meter?
1 dram per cubic meter equals 4.938066e-8 long tons per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cubic meter to long ton per cubic foot?
Multiply the dram per cubic meter value by 4.938066e-8. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cubic foot back to dram per cubic meter?
Use the reverse factor: 1 long ton per cubic foot equals 20,250,842.48 drams per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per cubic meter?
Dram per Cubic Meter (dr/m3) is a unit of density.
What is a long ton per cubic foot?
Long ton per Cubic foot (long ton/ft3) is a unit of density.
Is the dram per cubic meter to long ton per cubic foot conversion exact?
Yes. Both dram per cubic meter and long ton per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 4.938066e-8 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.